Re: PostgreSQL 12, JIT defaults
| От | Pavel Stehule |
|---|---|
| Тема | Re: PostgreSQL 12, JIT defaults |
| Дата | |
| Msg-id | CAFj8pRA8Uo0+ATdt9NQBrFm4LLxmvqJpG-RqLxZQFO9rh4g5VQ@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: PostgreSQL 12, JIT defaults (Andres Freund <andres@anarazel.de>) |
| Ответы |
Re: PostgreSQL 12, JIT defaults
Re: PostgreSQL 12, JIT defaults |
| Список | pgsql-hackers |
po 8. 10. 2018 v 17:10 odesílatel Andres Freund <andres@anarazel.de> napsal:
On October 8, 2018 8:03:56 AM PDT, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>Andres Freund <andres@anarazel.de> writes:
>> Where is the jit=on coming from? Config from before it was turned
>off?
>
>A look in guc.c shows that jit defaults to "on" whether or not JIT is
>enabled at compile time.
I thought Pavel was talking about 11 somehow...
I am sorry, It was not clear - I talked about master
> This seems, at best, rather user-unfriendly.
>And it's not like our conventions for other compile-option-affected
>GUCs, eg the SSL ones.
That was intentional, even though it perhaps should be better documented. That allows a distro to build and distribute pg without llvm enabled, but then have the JIT package with all the dependencies separately. The pg yum packages do so.
I don't like this solution - it is safe on production - but it can breaks my development environment - or we need to change setup and make install will not be enough.
Regards
Pavel
Andres
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